Refractory brick.



UNITED STATES P ENT OFFICE.

HENRY WESSLING, 0F HAYS STATION, PENNSYLVANIA.

REFRACTORY BRICK.

N 0 Drawing.

The object of the invention is to produce a brick capable ofwithstanding the highest possible industrial temperature withoutliability of disintegration.

The usual fire brick when formed of silica presents a somewhat roughenedor granulated surface and the'present invention has for its object. toproduce a brick having all the qualities of the'highest grade silicabrick with a smooth surface.

In producing the brick'the silica is of the highest grade of purity, orsubstantially pure silica. and is reduced to a comparati'vely coarsepowder and is then bonded by adding thereto finely pulverized soapstone.The manufacture of this brick and the proportions of the materialsentering into the manufacture thereof are the subject-matter of myco-pending application and need not be further described herein. Afterthe brick has been thoroughly dried it is immersed in a solution ofwater and finely pulverized silica, this solution being prepared aboutas follows: Substantially pure silica is ground Specification of LettersPatenti Having described my invention, what I claim and desire to secureby Letters Pat- I ent is:

1. As a new article of manufacture a re fractory brick composed ofparticles of silica bonded by soapstone and having a smooth surface ofvitrified silica formed by silica and water,'. and subsequently burningthe brick.

In testimony whereof, I have hereunto signed my name in the presence oftwo subscribing witnesses.

HENRY WESSLING.

In the presence of- CLARENCE A. WILLIAMS, Jonx H. RoMY.

Patented Mar. 3, 1914.. Application filed April 2. 1912. Serial No.688,077.

